• American Academy of Dermatology (AAD)
• American Porphria Foundation (APF)
• Cosmetic Products (via the FDA)
• Doctor Finder (via the AMA)
• Environmental Protection Agency
• The Myositis Assocation of America (MAA)
• National Vitiligo Foundation, Inc.
• OSHA
• Plants
• Plastic Surgery via the American Society of Plastic and Reconstructive Surgeons (ASPRS)
• Skin Care (via the Mayo Clinic)
• Skin Care Archives (via the AAD)

* The provision of these links does not imply an endorsement.